Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SATURDAY: MAY 31 , 2014
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 * 29.9 25.6 117
BLACK BEAR 8170 28.7 25.7 112 48.5 46.2 105
BLIND BULL SUM 8650 28.8 12.3 234 26.1 24.3 107
COTTONWOOD CREEK 7670 5.6 .0 * 39.4 31.3 126
EAST RIM DIVIDE 7930 .0 .0 * 17.9 15.0 119
GRAND TARGHEE 9260 40.4 40.3 100 45.0 38.6 117
GRANITE CREEK 6770 .1 .0 * 29.2 24.0 122
GRASSY LAKE 7265 8.0 5.9 136 46.4 43.6 106
GROS VENTRE SUMMIT 8750 .0 .0 * 17.6 17.0 104
GUNSIGHT PASS 9820 9.0 3.4 265 23.0 18.6 124
LEWIS LAKE DIVIDE 7850 16.0 12.6 127 47.1 42.6 111
PHILLIPS BENCH 8200 16.3 10.5 155 39.8 34.1 117
SALT RIVER SUMMIT 7760 .0 .0 * 22.3 20.8 107
SNAKE RIVER STATION 6920 .0 .0 * 30.3 27.7 109
SPRING CREEK DIVIDE 9000 22.2 12.3 180 36.8 29.1 126
THUMB DIVIDE 7980 .1 .0 * 23.7 23.8 100
TOGWOTEE PASS 9580 23.5 19.4 121 37.5 30.9 121
TWO OCEAN PLATEAU 9240 31.8 25.5 125 39.9 34.3 116
WILLOW CREEK 8380 10.2 4.6 222 47.3 42.5 111
YOUNTS PEAK 8350 -M 4.1 * -M 20.6 *
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Basin Index (%) 140 114
MADISON-GALLATIN
BLACK BEAR 8170 28.7 25.7 112 48.5 46.2 105
CANYON 7870 .0 .0 * 20.9 20.9 100
MADISON PLATEAU 7750 6.8 7.1 96 30.8 33.0 93
WEST YELLOWSTONE 6700 .0 .0 * 19.6 18.5 106
WHISKEY CREEK 6800 .3 .0 * 26.8 25.6 105
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Basin Index (%) 109* 102
YELLOWSTONE
BEARTOOTH LAKE 9360 27.9 17.8 157 34.9 25.1 139
BURNT MTN 5880 .1 .0 * 26.2 20.7 127
CANYON 7870 .0 .0 * 20.9 20.9 100
COLE CREEK 7850 17.9 10.0 179 22.4 21.2 106
EVENING STAR 9200 29.6 18.5 160 46.8 34.8 134
FISHER CREEK 9100 -M 28.5 * 47.2 39.9 118
NORTHEAST ENTRANCE 7350 .0 .0 * 19.7 16.6 119
PARKER PEAK 9400 22.3 14.5 154 35.7 23.7 151
SYLVAN LAKE 8420 6.5 7.6 86 35.4 29.2 121
THUMB DIVIDE 7980 .1 .0 * 23.7 23.8 100
TWO OCEAN PLATEAU 9240 31.8 25.5 125 39.9 34.3 116
WHITE MILL 8700 24.1 17.6 137 35.1 30.3 116
WOLVERINE 7650 -M .0 * 21.1 16.4 129
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Basin Index (%) 144 121
WIND RIVER
BURROUGHS CREEK 8750 -M 1.9 * -M 21.0 *
CASTLE CREEK 8400 .0 -M * 15.3 -M *
COLD SPRINGS 9630 .0 .0 * 17.4 15.3 114
DEER PARK 9700 -M 3.9 * 24.8 27.0 92
HOBBS PARK 10100 5.4 6.7 81 19.2 20.4 94
KIRWIN 9550 4.6 2.2 209 22.6 16.9 134
LITTLE WARM 9370 .0 .0 * 20.5 18.4 111
OWL CREEK 8975 .1 .0 * 10.2 10.7 95
SOUTH PASS 9040 .3 .4 75* 19.4 23.5 83
ST. LAWRENCE ALT 8620 .2 .0 * 13.2 14.4 92
TOGWOTEE PASS 9580 23.5 19.4 121 37.5 30.9 121
TOWNSEND CREEK 8700 .0 .0 * 14.7 18.1 81
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Basin Index (%) 119* 102
BIGHORN BASIN
BALD MTN. 9380 23.3 14.2 164 25.7 23.4 110
BEAR TRAP MEADOW 8200 .0 .0 * 15.2 13.8 110
BONE SPRINGS DIV 9350 13.2 9.3 142 22.6 22.1 102
GRAVE SPRINGS 8550 .0 .0 * 15.9 16.1 99
KIRWIN 9550 4.6 2.2 209 22.6 16.9 134
MARQUETTE 8760 .1 -M * 18.1 -M *
MIDDLE POWDER 7760 .0 .0 * 19.0 17.3 110
OWL CREEK 8975 .1 .0 * 10.2 10.7 95
POWDER RIVER PASS 9480 2.1 .0 * 20.8 18.6 112
SHELL CREEK 9580 12.9 9.7 133 22.0 19.8 111
TIMBER CREEK 7950 .1 .0 * 14.3 13.5 106
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Basin Index (%) 159* 109
SHOSHONE RIVER
BLACKWATER 9780 25.7 20.2 127 35.0 27.3 128
EVENING STAR 9200 29.6 18.5 160 46.8 34.8 134
MARQUETTE 8760 .1 -M * 18.1 -M *
SYLVAN ROAD 7120 .0 .0 * 25.5 21.3 120
YOUNTS PEAK 8350 -M 4.1 * -M 20.6 *
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Basin Index (%) 143* 129
POWDER RIVER
BEAR TRAP MEADOW 8200 .0 .0 * 15.2 13.8 110
CLOUD PEAK RESERVOIR 9860 14.9 6.2 240 27.2 21.1 129
GRAVE SPRINGS 8550 .0 .0 * 15.9 16.1 99
HANSEN SAWMILL 8360 .1 .0 * 17.1 14.1 121
MIDDLE POWDER 7760 .0 .0 * 19.0 17.3 110
POWDER RIVER PASS 9480 2.1 .0 * 20.8 18.6 112
SOLDIER PARK 8720 .1 -M * 17.6 -M *
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Basin Index (%) 276* 114
TONGUE RIVER
BIG GOOSE 7990 .5 .0 * 20.7 18.1 114
BONE SPRINGS DIV 9350 13.2 9.3 142 22.6 22.1 102
BURGESS JUNCTION 7880 3.2 .1 3200* 21.8 18.0 121
DOME LAKE 8880 7.0 .0 * 23.9 20.2 118
LITTLE GOOSE 8870 2.5 -M * 23.8 -M *
SUCKER CREEK 8880 4.9 .6 817* 25.8 21.4 121
TIE CREEK 6870 .0 .0 * 19.8 18.6 106
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Basin Index (%) 288* 114
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 18.2 16.5 110
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Basin Index (%) * 110
CHEYENNE RIVER BASIN
BLIND PARK 6890 .1 .0 * 21.5 18.2 118
NORTH RAPID CREEK 6130 .0 .0 * 21.1 15.8 134
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Basin Index (%) * 125
UPPER N. PLATTE
ARAPAHO RIDGE 10960 21.0 8.5 247 35.4 29.1 122
BLACKHALL MTN 9820 25.9 -M * 44.7 -M *
COLUMBINE 9160 4.7 .0 * 42.7 31.4 136
DIVIDE PEAK 8880 .0 .0 * 30.1 27.4 110
JOE WRIGHT 10120 27.3 14.5 188 43.5 34.2 127
LAPRELE CREEK 8375 .0 .0 * 17.9 17.9 100
MED BOW 10500 -M -M * 49.5 -M *
NORTH FRENCH CREEK 10130 28.9 21.2 136 44.3 35.0 127
NEVER SUMMER 10280 25.9 15.9 163 29.5 -M *
OLD BATTLE 10000 32.7 24.8 132 45.5 43.4 105
RAWAH 9020 .0 .0 * 26.4 19.5 135
SAGE CREEK BASIN 7850 .0 .0 * 14.8 17.8 83
SAND LAKE 10050 38.1 20.9 182 43.0 33.0 130
SOUTH BRUSH CREEK 8440 .0 .0 * 19.8 21.0 94
TOWER 10500 43.8 37.4 117 61.2 49.1 125
WEBBER SPRINGS 9250 9.0 .0 * 37.6 33.0 114
WILLOW CREEK PASS 9540 3.6 .0 * 22.3 18.4 121
ZIRKEL 9340 15.1 .0 * 49.0 33.9 145
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Basin Index (%) 175* 120
SWEETWATER
DEER PARK 9700 -M 3.9 * 24.8 27.0 92
LARSEN CREEK 9000 .0 .3 0* 17.9 -M *
SOUTH PASS 9040 .3 .4 75* 19.4 23.5 83
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Basin Index (%) 43* 88
LOWER N. PLATTE
CASPER MTN. 7900 .1 .0 * 21.8 21.6 101
LAPRELE CREEK 8375 .0 .0 * 17.9 17.9 100
RENO HILL 8400 3.7 .0 * 29.0 22.6 128
WINDY PEAK 7900 .0 .0 * 18.4 16.0 115
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Basin Index (%) * 112
LARAMIE RIVER
BROOKLYN LAKE 10240 18.1 5.9 307 38.8 28.3 137
CINNABAR PARK 9574 15.5 1.9 816* 38.0 30.2 126
CROW CREEK 8330 .0 .0 * 19.2 16.1 119
DEADMAN HILL 10220 19.2 8.7 221 32.7 24.0 136
RAWAH 9020 .0 .0 * 26.4 19.5 135
ROACH 9700 8.9 2.4 371 33.4 25.6 130
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Basin Index (%) 326 131
S. PLATTE
BLACK MOUNTAIN 8920 .1 -M * 20.9 -M *
CROW CREEK 8330 .0 .0 * 19.2 16.1 119
DEADMAN HILL 10220 19.2 8.7 221 32.7 24.0 136
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Basin Index (%) 221* 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.5 19.2 107
DIVIDE PEAK 8880 .0 .0 * 30.1 27.4 110
ELK RIVER 8700 .1 .0 * 28.6 25.4 113
LITTLE SNAKE RIVER 8915 -M 2.5 * -M 36.0 *
OLD BATTLE 10000 32.7 24.8 132 45.5 43.4 105
SAGE CREEK BASIN 7850 .0 .0 * 14.8 17.8 83
SANDSTONE RS 8150 -M .0 * 21.2 23.2 91
WHISKEY PARK 8950 14.1 7.5 188 47.3 34.8 136
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Basin Index (%) 145* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 * 17.1 17.8 96
BLIND BULL SUM 8650 28.8 12.3 234 26.1 24.3 107
EAST RIM DIVIDE 7930 .0 .0 * 17.9 15.0 119
ELKHART PARK G.S. 9400 1.5 .2 750* 20.5 17.8 115
GROS VENTRE SUMMIT 8750 .0 .0 * 17.6 17.0 104
GUNSIGHT PASS 9820 9.0 3.4 265 23.0 18.6 124
KENDALL R.S. 7740 .0 .0 * 25.3 17.6 144
LOOMIS PARK 8240 1.1 .0 * 27.9 21.4 130
NEW FORK LAKE 8340 .0 .0 * 16.0 14.5 110
POCKET CREEK 9360 -M -M * 15.3 -M *
SNIDER BASIN 8060 .0 .0 * 23.1 17.5 132
SPRING CREEK DIVIDE 9000 22.2 12.3 180 36.8 29.1 126
TRIPLE PEAK 8500 8.4 .0 * 41.4 31.4 132
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Basin Index (%) 252* 121
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.8 -M *
BUCK PASTURE 9700 .0 -M * 21.5 -M *
EF BLACKS FORK GS 9360 .0 -M * 16.3 -M *
HAMS FORK 7840 .0 .0 * 17.0 15.2 112
HEWINTA 9519 .0 .0 * 18.8 18.5 102
HICKERSON PARK 9145 .0 .0 * 12.7 14.3 89
HOLE-IN-ROCK 9150 .0 .0 * 13.9 13.9 100
INDIAN CREEK 9425 13.7 11.2 122 30.9 28.0 110
KELLEY R.S. 8180 .0 .0 * 23.7 22.7 104
SPIRIT LK 10235 .0 -M * 19.0 -M *
STEEL CREEK PARK 10200 8.9 9.7 92 21.5 22.0 98
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Basin Index (%) 108* 103
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.8 -M *
BUG LAKE 7950 .3 .0 * 24.5 24.4 100
BURTS MILLER RANCH 8000 .0 -M * 8.9 -M *
CHALK CREEK #1 8993 .2 6.7 3 27.7 31.9 87
HAYDEN FORK 9212 .0 .0 * 25.7 26.7 96
KELLEY R.S. 8180 .0 .0 * 23.7 22.7 104
LILY LAKE 9156 .0 .0 * 19.3 22.3 87
MONTE CRISTO 8960 1.1 4.9 22 30.9 32.7 94
SALT RIVER SUMMIT 7760 .0 .0 * 22.3 20.8 107
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Basin Index (%) 14* 96
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.